Preheat the oven to 350 degrees F and line an 8” x 5” loaf pan with parchment paper.
Add all of the ingredients to a blender and blend until combined. You may need to scrape the sides with a rubber spatula and re-start the blender to get it to incorporate. The batter will be very thick! Note: if you don't own a high-powered blender, you can use a stand mixer or mix everything in a mixing bowl.
Transfer the batter to the parchment-lined pan and smooth into an even layer. Bake 40 to 45 minutes, until the edges are golden-brown and the center has set up. Allow bread to cool at least 30 minutes.
If making the glaze, stir together the sugar-free confectioners sugar and water in a bowl until thick and creamy. If needed, add more water (or sweetener) to get your desired consistency.
Drizzle the glaze liberally over the bread and smooth it into a layer (or make funky designs...get on with your bad self).
Sprinkle with sugar-free brown sugar to make it look extra cool. Slice and serve!